The Carson and Colorado Railway was a U.S. 3 ft narrow gauge railroad that ran from Mound House, Nevada, to Keeler, California, below the Cerro Gordo Mines. It was incorporated on May 10, 1880, as the Carson and Colorado Railroad, and construction on the railroad began on May 31, 1880. The narrow gauge track was chosen to reduce cost. Much of the route now parallels U.S. Route 95 Alternate, U.S. Route 95, Nevada State Route 360, U.S. Route 6, and U.S. Route 395.

Mound House is a small unincorporated community in Lyon County, Nevada on U.S. Route 50 that is situated between Nevada's capital, Carson City, and Dayton. Its elevation is 4,974 feet (1,516 m). It is in Lyon County, one of eight Nevada counties that allow for legalized prostitution, and is home to four brothels.